Move proto definitions to external/perfetto

This commit moves the layer and transaction .proto files
to external/perfetto/protos/perfetto/trace/android/.

Test: atest libsurfaceflinger_unittest && atest transactiontrace_testsuite
Bug: b/284424784
Change-Id: I60b4a51fbb092d44759b7085536e1299815597f8
29 files changed